California Code, Vehicle Code - VEH § 4767

(a) If delinquent parking or toll violations have been reported to the department for a vehicle for which a transfer of ownership and registration has been requested, the department shall not transfer ownership and registration unless the transferee requesting the transfer pays all of the fines and penalties for those violations to the department, or provides an original abstract or notice of disposition from the court or designated processing agency that the fines and penalties for those violations have been cleared with the parking agency or the court.

(b) This section only applies if the transfer requested is one described in Section 6285 of the Revenue and Taxation Code.